Include WinPE details for Bitlocker export

Addresses issue #40

scripts/wk/os/win.py

@@ -226,6 +226,10 @@ def export_bitlocker_info() -> None:
   output_raw = []
   output_str = ''
 
+  # WinPE check
+  if os.environ.get('SYSTEMDRIVE', 'C:').upper() == 'X:':
+    output.append('[Check run under Win10XPE]')
+
   # Get info
   for cmd in commands:
     proc = run_program(cmd, check=False)